Scanning Probe Microscopy Investigation of Nonahelicene on Ag(110)
- PC Online Talk
- Date: Apr 29, 2021
- Time: 11:00 AM (Local Time Germany)
- Speaker: Maximilian Halbauer
- FHI Department PC
Scanning probe microscopy [1-3] with the capability of
single-molecule manipulation in combination with tip-enhanced Raman
spectroscopy [4-5] can offer a unique insight to these properties. A STM
and AFM study of nonahelicene (H) on Ag(110) is presented and the
experimental techniques are shortly introduced. The molecular
self-assembly on the surface is presented and highlights the great
control over the local environment. Results from high-resolution imaging
with functionalized and unfunctionalized tips were then used to
determine the conformation, chirality and orientation of adsorbed
H-molecules and to establish the interaction behavior with the
underlying Ag(110)-substrate. Scanning tunneling spectroscopy (STS)
allowed an insight to the electronic structure of the molecule. The
first results of frequency-shift spectroscopy with the qPlus-AFM sensor
are presented, as they offer one opportunity for investigation of the
spring-like properties of helicenes. An overview of the experiments that
are currently in progress and conclusions for future experiments is
given at the end.
 J. Repp, G. Meyer, et. al., Phys. Rev. Lett. 2005, 94, 026803.
 L. Gross, N. Moll, et. al., Phys. Rev. Lett. 2011, 107, 086101.
 L. Gross, F. Mohn, et. al., Science 2009, 325, 1110-1114.
Meeting-ID: 968 2291 8457